Integrin αβ receptor targeting PET/MRI dual-modal imaging probe based on the Cu labeled manganese ferrite nanoparticles.

Author(s) Shi, X.; Shen, L.
Journal J Inorg Biochem
Date Published 2018 Sep
Abstract

With the advent of positron emission tomography/magnetic resonance imaging (PET/MRI) scanner, PET/MRI dual-modal imaging will play more and more important role in the diagnosis of cancers and other diseases. Until now, there is no an approved PET/MRI dual-modal imaging probe. The goal of this work is to design and synthesize potential PET/MRI dual-modal imaging probe based on superparamagnetic manganese ferrite nanoparticles. We have developed superparamagnetic nanoparticles that have uniform size with 5 nm and can be further functionalized through surface coating with dopamine and polyethylene glycol derivatives, which provide functional groups for conjugating tumor-targeting biomolecules and bifunctional chelators. The nanoparticles conjugated with integrin αβ over-expressed targeting cyclic arginine-glycine-aspartic acid (RGD)-peptide and labeled with positron radionuclide copper-64 were intravenously injected into glioblastoma xenograft nude mice. In vivo MRI and PET imaging of mice implied that the PET/MRI dual-modal imaging probe can precisely locate the tumor site with αβ over expression.

DOI 10.1016/j.jinorgbio.2018.06.004
ISSN 1873-3344
Citation Shi X, Shen L. Integrin αβ receptor targeting PET/MRI dual-modal imaging probe based on the Cu labeled manganese ferrite nanoparticles. J Inorg Biochem. 2018;186:257-263.

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